Rotate & tilt sliders in canvas

#186

![screen shot 2014-07-24 at 4 56 50 pm](https://cloud.githubusercontent.com/assets/6219591/3694706/15eca2ec-1375-11e4-87e0-7a4714b24b08.png)

The slider tooltip does fall off the right side of the screen as the horizontal slider draws all the way to the right. Not perfect, but we're on the right track. It makes sense to have all of the keyboard-free object manipulation close together, though we're still under-utilizing the side panel.